摘要
以肼黄染料废水为模拟对象,在单因素试验的基础上通过响应面法优化Fenton氧化的脱色效果,研究了初始pH值、Fe2+投加量和H2O2投加量3个因素在该废水脱色过程中的显著性和交互性。结果表明,这3个因素对肼黄染料废水的脱色率的影响均具有显著性,且初始pH值与Fe2+投加量的交互影响、Fe2+投加量与H2O2投加量的交互影响也具有显著性。响应面法优化得到的最佳脱色工艺:初始pH值为3.19,Fe2+质量浓度为23.2 mg/L,H2O2质量浓度为345.4 mg/L,反应温度45℃,反应时间5 min;在此条件下的理论脱色率为90.85%,与3次实际平行试验的脱色率均值仅相差2.30%。
Hydrazine yellow dye wastewater was used as the simulation object, on the basis of single factor experiment, the initial pH value, Fe2＋ and H202 doses during the decolorizing process of Fenton oxidation by response surface methodology （RS1VI） were researched. The results showed the three factors on the decolorization of dyeing wastewater were significant, meanwhile, the interaction effects between the Fe2＋ dose and both of the initial pH value and H202 dose were significant. The optimal operating conditions determined by RSM are as following ： pH = 3.19,ρ（Fe2＋） = 23.2 mg/L,ρ（H202） = 345.4 mg/L,45 and 5 min. Under these conditions, the mean error of three parallel tests＂ average decolorization rate compared with the theoretical value 90.85% is just 2.30%.
出处
《环境科技》
2013年第1期8-12,共5页
Environmental Science and Technology
关键词
FENTON氧化
脱色
响应面法
Fenton oxidation
Decolorization
Response surface methodology
